Diplodia fruit rot
Fruits darken to brown and black from the stem end or a wound, the flesh turns dry and corky, and black sooty spores cover the skin.
Crops it strikes
What you see
When to act
Check the fruit every week from fruit set. Remove any fruit that darkens from the stem end or around a wound, and look for black dieback on the twigs that feed the rot.
What to spray
Active ingredients only, never brands. The FRAC group tells how it works: switch to a different group next time, so the disease does not learn to survive it. Spray only when the damage is worth the cost, and only with products registered with the Fertilizer and Pesticide Authority for your crop. Follow the label. The Shopee and Lazada links only show who sells something with that active ingredient, not a recommendation of any seller or product.
How to prevent it
- Bag young fruit early with paper or net bags. Bags keep spores off and stop the insect wounds where the rot starts.
- Prune dead twigs and branches, which carry the fungus, and burn them with any mummified fruit left on the tree.
- Pick up fallen and rotting fruit every few days and bury it away from the trees.
- Harvest with a short stalk, handle gently and keep the fruit cool and dry. The rot starts at the stem end and at bruises.
- Keep trees watered in long dry spells and well fed. Stressed trees die back and feed the fungus.
Where this comes from
Not sure it is this one?
Many diseases look alike. Send a photo to Anee, the smart farm technician in anee.io. She reads it with your crop, its age and the weather, and tells you what it most likely is and what to do first. In Tagalog or English.